1) Define and compare the four levels of protein organization. How does the sequence of nucleotides...

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Biology

1) Define and compare the four levels of proteinorganization. How does the sequence of nucleotides of the generelate to the levels of protein organization?

2) Explain transcriptional control of gene expression using theexpression of the lac operon in Escherichia coli

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Four level of protein organisations are 1 Primary StructureThe linear sequence of amino acids forming the backbone ofproteinEach protein has a unique sequence of amino acids which isdetermined by the genes contained in DNA The primary structure ofa protein is largely responsible for its functionIn case ofprimary structure of protein amino acids are held together by aprotein covalent peptide bond or linkage2 Secondary structure The spatial arrangement of protein by twisting of thepolypeptide chainthe conformation of polypeptide chain by twisting of folding isreferred to as secondary structure The amino acids are locatedclose to each other in their sequence Two types of secondarystructures Alpha helix and beta sheet are See Answer

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